Device, system, and method to secure an article to a tissue

ABSTRACT

A device for securing an article to a tissue may include a body, transitionable from a deployment state to a securing state, having a first portion, a second portion, and a medial portion therebetween. The first portion and the second portion may each have an end configured to pierce the tissue. The device in the deployment state may have a linearly extended or a U-shaped structure. In the securing state, the first portion may be embedded in the tissue and the medial portion may contact the article. A system for securing the article to the tissue may releasably engage the device while in the deployment state. A method for securing the article may include contacting the article with a tissue surface and releasing the device from the system so that the device, in the securing state, may anchor the article to the tissue.

CLAIM OF PRIORITY

This application claims benefit of and priority to U.S. Provisional Patent Application No. 61/840,588, entitled “STAPLE AND METHOD TO DELIVER IT TO A TARGET SITE,” filed Jun. 28, 2013, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND

Staples exist for a variety of applications in the medical field. There are staples that may fix soft tissues, boney tissues, and soft tissues to boney tissues. Some staples may bring two or more tissues together while the staples are applied. Alternatively, staples may function to fix together some tissues that are brought together by other means, such as by mechanical or chemical means (shape memory)

In some applications, staples may be designed to bring tissues together so the tissues may heal. In some alternative applications, one or more staples may be used to hold or otherwise affix an instrument or other structure to one or more tissues. In some instances, however, an instrument or structure may not be adapted to work with a staple due to size or geometry.

Such medical staples may find use in a number of surgical or non-surgical procedures including, without limitation, an open surgical procedure, an arthroscopic procedure, or in less invasive procedures. Additionally, staples may include additional features suited to specialty applications including imaging applications, such as radiographic procedures.

SUMMARY

In an embodiment, a device for securing an article to a tissue may be composed of a body, transitionable from a first deployment state to a second securing state, having a first portion, a second portion, and a medial portion between the first portion and the second portion, in which the first portion has a first terminal end configured to pierce the tissue, and in which the second securing state comprises at least a section of the first portion of the body assuming a curved geometry embedded in the tissue and at least a section of the medial portion of the body contacting a surface of the article.

In an embodiment, a device for securing an article to a tissue may be composed of a body, transitionable from a first deployment state to a second securing state, having a first portion, a second portion, and a medial portion between the first portion and the second portion, in which the first portion has a first terminal end configured to pierce the tissue, and a tab standoff in mechanical communication with the medial portion of the body at a first end and a tab at a second end, in which the tab is displaced by a slot from the body. The first deployment state of the device may be a linearly extended state. In the second securing state, the device has at least a section of the first portion of the body assuming a curved geometry embedded in the tissue and at least a section of the second portion contacting a surface of the article.

In an embodiment, a device for securing an article to a tissue may be compose of a body, transitionable from a first deployment state to a second securing state, having a first portion, a second portion, and a medial portion between the first portion and the second portion, in which the first portion has a first terminal end configured to pierce the tissue and the second portion has a second terminal end configured to pierce the tissue. The first deployment state may be a U-shaped state. In the second securing state, the device has at least a section of the first terminal end assuming a curved geometry embedded in the tissue, at least a section of the second terminal end assuming a curved geometry embedded in the tissue, and at least a section of the medial portion contacting a surface of the article.

In an embodiment, system for securing an article to a tissue by releasibly engaging at least one securing device may be composed of an exterior tube having a distal end, in which at least a portion of the distal end of the exterior tube is configured to form a stable mechanical contact between the article and the tissue, and a push rod at least partially disposed within the interior tube. The system may be configured to releasibly engage at least one securing device having a body transitionable from a first deployment state to a second securing state, and the push rod may be configured to effect a release of the at least one securing device, thereby allowing the securing device body to transition from the first deployment state to the second securing state.

In an embodiment, a method of securing an article to a tissue, may be composed of providing a system for securing the article to the tissue, the system composed of a housing having a distal end, in which at least a portion of the distal end of the housing is configured to engage the article with a surface of the tissue, providing at least one securing device composed of a body, transitionable from a first deployment state to a second securing state, having a first portion, a second portion, and a medial portion between the first portion and the second portion, in which the first portion has a first terminal end configured to pierce the tissue, and wherein the second securing state comprises at least a section of the first portion of the body assuming a curved geometry embedded in the tissue and at least a section of the medial portion of the body assuming a curved geometry around a surface of the article, releasibly engaging the securing device in the first deployment state within the system for securing the article, engaging, by least a portion of the distal end of the housing, the article with the surface of the tissue, releasing the securing device from the distal end of the housing, thereby allowing the body to assume the second securing state and securing the article against the surface of the tissue.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A depicts a side view of a securing device having a linearly extended deployment state according to an embodiment.

FIG. 1B depicts a side view of a securing state of a securing device having a linearly extended deployment state according to an embodiment.

FIG. 1C depicts a side view of an article secured to a tissue surface by a securing device having a linearly extended deployment state according to an embodiment.

FIG. 2A depicts a side view of a securing device having a U-shaped deployment state according to an embodiment.

FIG. 2B depicts a 3-D view of an article secured by a securing device having a U-shaped deployment state according to an embodiment.

FIGS. 2C-2F depict 3-D views of exemplary securing states attainable by a securing device having a U-shaped deployment state according to an embodiment.

FIGS. 3A-3C depict use of a system to secure an article to a surface of a tissue using a securing device having a linearly extended deployment state according to an embodiment.

FIGS. 4A-4D depict use of a system to secure an article to a surface of a tissue using a securing device having a U-shaped deployment state according to an embodiment.

FIGS. 5A-5D depict a manner in which an article may be secured to a surface of a tissue by the use of a securing device having a U-shaped deployment state according to an embodiment.

FIG. 6 is a flow chart for a method of securing an article to a surface of a tissue using a securing device having a deployment state and a securing state according to an embodiment.

DETAILED DESCRIPTION

In some applications, there may be a need to attach an article to a tissue, and especially a need for the article to be in close proximity to (for example, in physical contact with) the tissue. In many surgical procedures, articles may be secured through the use of one or more sutures, staples, and clamps. Sutures may be used in a wide variety of procedures because sutures, comprising flexible material, may take on the shape of the surface of the article being attached. However, suturing is a time-consuming process, and there may be variability in the degree of stabilization of the article to the tissue surface due to the innate variability of suture application. Additionally, the flexible suturing material may have a limited tensile strength that may not be strong enough for some applications.

Staples and clips may require less time to apply. Staplers, used to apply the staples, may provide more consistent force for securing the article to the tissue. As a result, there is less variability in force applied to the article, especially if a number of staples are used. Such staples and clips are typically made of metal, which has a greater tensile strength than sutures. However, staples and clips, because they are more rigid than sutures, may not readily conform to the surface of the article being secured. As a result, the article secured by the staples or clips may shift because the clip/article interface is not exact.

Disclosed herein is a device for securing an article to a tissue in which the device combines useful features of both sutures and staples. Specifically, the securing device disclosed herein may adjust to the surface geometry of the article being secured while being easily applied from a stapler-type system. In some examples, the article may include one or more cardiovascular implant articles. In some examples, the tissue may comprise a soft tissue such as one or more of a muscle tissue, a tendon tissue, a ligament tissue, and a cardiovascular tissue.

In some applications, the device may place the article in close proximity to the tissue. Alternatively, the device may be used to cause the article to physically contact the tissue. In some alternative applications, the securing device may be used to secure two portions of tissue together with or without securing a non-tissue article thereto.

Additionally, a system for deploying the device is disclosed herein. In some embodiments, the system may be an arthroscopic delivery device or may be part of an arthroscopic device. Such arthroscopic devices may be used, for example, during open surgical procedures or in minimally invasive surgical procedures. In some medical procedures, it may be necessary to visualize the attachment of the device to the tissue and article. Examples of visualization methods may include radiographic methods and ultrasound methods. The device disclosed herein generally has a two dimensional design and function, thereby accommodating such visualization techniques.

The disclosed device can be used in a variety of procedures in which one or more devices and/or one or more tissues may be involved. In one example, an article may be partially pre-attached to a tissue by an alternative means, such as by gluing, and a more robust attachment is required. In another example, the article may be in physical proximity to the tissue but may lack any secure attachment. In yet another example, the article may be completely attached to the tissue and additional locking between the article and the tissue may be required.

In one non-limiting example, the article may include one or more sutures or polymers and the tissue may include one of the papillary muscles. Such a procedure may find use in repairing or replacing one or more of the chordae tendineae by providing an anchor for the suture or polymer in the muscle to which the replacement may be attached.

The disclosed device can also be used as a means to attach two articles together. In one non-limiting embodiment, the first article may be a previously implanted article already fixed at a target site and the second article may be a new structure to be fixed to the first article and/or the surrounding tissue. As a non-limiting example, the first article may be a D-shaped or round annuloplasty ring that is implanted in a mitral valve annulus, and the second article may include a prosthetic valve designed to work in concert with the annuloplasty ring.

As disclosed herein, the securing device may take on a variety of embodiments as depicted in FIGS. 1A-1C and 2A-2F. It may be understood that such figures and embodiments are only examples and are not limiting. Common to all the possible embodiments of the securing device is the ability of the device to transition between a deployment state and a securing state. The deployment state may comprise a geometry consistent with a device adapted to deliver the securing device, and may include, without limitation, a linearly extended geometry or a U-shaped geometry. The securing state may comprise a geometry capable of contacting the article with a tissue or other article and securing the article thereto. In some non-limiting embodiments, the securing state may include contacting a portion of the securing device with at least a portion of a surface of the article to be secured, and embedding at least one terminal or end portion of the securing device in the tissue. The at least one terminal or end portion of the securing device, in the securing state, may include a curved or angled geometry within the tissue, thereby providing an anchor for the device. It may be understood that the device, in transitioning from the deployment state to the securing state may assume any appropriate intermediate geometry consistent with the initial (deployment) and final (securing) states.

Such securing devices may derive their property of transitioning from a first geometric state to a second geometric state from the material or materials from which they are made. In particular, the securing devices disclosed herein may comprise one or more materials having a high yield stress and high level of recoverable plastic strain. As a result of these properties, the device may be deformed from its relaxed shape (comprising the securing state) into a second shape (the deployment state) under force, but will return to the original relaxed shape once the force is removed.

In some non-limiting examples, the body of the securing device may include one or more of a metal, a polymer, and a plastic. Non-limiting examples of such metals may include 316 stainless steel, a cobalt chromium alloy, and combinations and alloys thereof. In some non-limiting examples, the body of the securing device may include one or more of a biocompatible material and a bio-absorbable material. In some non-limiting examples, the biocompatible material may include polyether ether ketone, a polyetherimide, or similar material. In some non-limiting examples, the body of the securing device may include one or more of a superelastic material and a shape memory alloy. A non-limiting example of such a shape memory alloy may include a nickel titanium alloy.

In addition to the materials to provide appropriate material properties, the securing devices may also include materials specific for the securing device function or use. Thus, in some embodiments, at least a portion of the body of the securing device may include a material that is visualizable by a radiological technique, an MRI technique, and an ultrasound technique.

In general, there are no limitations to any one or more of the physical dimensions of the securing device, as the dimensions of any one securing device may depend, at least in part, on the article to be secured, the tissue to which it may be secured, and the system used to deploy the securing device and secure the article. In one embodiment, the body of the securing device may have a length of about 10 mm to about 30 mm. Examples of the body length of the securing device may include a length of about 10 mm, about 12 mm, about 14 mm, about 16 mm, about 18 mm, about 20 mm, about 22 mm, about 24 mm, about 26 mm, about 28 mm, about 30 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, the body of the securing device may have a length of about 20 mm. In some securing devices, the body may have a cross-sectional diameter of about 0.2 mm to about 1 mm. Examples of the body cross-sectional diameter of the securing device may include a diameter of about 0.2 mm, about 0.3 mm, about 0.4 mm, about 0.5 mm, about 0.6 mm, about 0.7 mm, about 0.8 mm, about 0.9 mm, about 1 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, the body of the securing device may have a cross-sectional diameter of about 0.5 mm.

In some embodiments, at least a portion of the body of the securing device may have a circular cross-section. In some securing devices, the body may have a circular cross-sectional diameter of about 0.2 mm to about 1.5 mm. Examples of the circular cross-sectional diameter of the securing device may include a diameter of about 0.2 mm, about 0.3 mm, about 0.4 mm, about 0.5 mm, about 0.6 mm, about 0.7 mm, about 0.8 mm, about 0.9 mm, about 1 mm, about 1.3 mm, about 1.5 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, the body of the securing device may have a circular cross-sectional diameter of about of about 0.8 mm.

In some embodiments, at least a portion of the body of the securing device may have a square or rectangular cross section. In some securing devices, the body may have a rectangular cross-section having a first cross-sectional diameter of about 0.2 mm to about 1 mm and a second cross-sectional diameter of about 0.2 mm to about 1 mm. Examples of the first cross-sectional diameter of the securing device may include a diameter of about 0.2 mm, about 0.3 mm, about 0.4 mm, about 0.5 mm, about 0.6 mm, about 0.7 mm, about 0.8 mm, about 0.9 mm, about 1 mm, and any value or range between any two of these values including endpoints. Examples of the second cross-sectional diameter of the securing device may include a diameter of about 0.2 mm, about 0.3 mm, about 0.4 mm, about 0.5 mm, about 0.6 mm, about 0.7 mm, about 0.8 mm, about 0.9 mm, about 1 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, a securing device having a rectangular cross-section may have a first cross-sectional diameter of about 0.5 mm and a second cross-sectional diameter of about 0.8 mm.

FIG. 1A depicts a side view of one embodiment of a securing device having a linearly extended deployment state. FIG. 1B depicts a side view of the same securing device as FIG. 1A in the securing state.

As depicted in FIG. 1A, the securing device in the deployment state 10 a may include a first portion 12 a, a second portion 14 a, and a medial portion 13 a between the first portion and the second portion. The first portion 12 a, the second portion 14 a, and the medial portion 13 a together may all form a linearly extended structure. The first portion 12 a may have a first terminal end 18 a having a sharpened point for penetrating the tissue. In some alternative embodiments, the first terminal end 18 a may include one or more barbs, one or more serrations, one or more hooks, or any combination thereof. The second portion 14 a may have a second terminal end (not shown) which, in some embodiments, may be a blunt end. The securing device in the deployment state 10 a may also include a tab standoff 17 a that is connected to a tab 11 a on one end and to the medial portion 13 a of the securing device on the other end. The tab 11 a may be displaced from the medial portion 13 a by a slot 15 a.

In some non-limiting examples, the tab 11 a may have a length of about 2 mm to about 7 mm. Examples of the length of the tab 11 a may include a length of about 2 mm, about 3 mm, about 4 mm, about 5 mm, about 6 mm, about 7 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, the tab 11 a may have a length of about 5 mm. In some non-limiting examples, the tab 11 a may have a width of about 0.2 mm to about 1 mm. Examples of the width of the tab 11 a may include a width of about 0.2 mm, about 0.3 mm, about 0.4 mm, about 0.5 mm, about 0.6 mm, about 0.7 mm, about 0.8 mm, about 0.9 mm, about 1 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, the tab 11 a may have a width of about 0.5 mm. In some non-limiting examples, the tab 11 a may be displaced from the medial portion 13 a of the body of the securing device by a slot 15 a having by a distance of about 0.5 mm to about 3 mm from the medial portion. Examples of the distance of the tab 11 a from the medial portion 13 a of the body may include a distance of about 0.5 mm, about 1 mm, about 1.5 mm, about 2 mm, about 2.5 mm, about 3 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, the tab 11 a may have distance from the medial portion 13 a of the body of about 1.5 mm.

The securing device in the deployment state 10 a may also include a friction protrusion 16 a in mechanical communication with the medial portion of the body 13 a and proximate to the tab 11 a. In some embodiments, the tab 11 a may have a first end in mechanical communication with the tab standoff 17 a and have a second free end approximately opposite the friction protrusion 16 a without making physical contact with it. In some alternative embodiments, the second free end of the tab 11 a may be in mechanical contact with the friction protrusion 16 a. The friction protrusion 16 a and the tab 11 a may help secure the securing device in the extended state 10 a to a system configured to deploy it, as disclosed below.

In some non-limiting embodiments, the friction protrusion 16 a may have a height of about 0.2 mm to about 1 mm. Examples of the height of the friction protrusion 16 a may include a height of about 0.2 mm, about 0.3 mm, about 0.4 mm, about 0.5 mm, about 0.6 mm, about 0.7 mm, about 0.8 mm, about 0.9 mm, about 1 mm, and ranges between any two of these values including endpoints. In one non-limiting example, the friction protrusion 16 a may have a height of about 0.5 mm.

As depicted in FIG. 1B, the securing device in FIG. 1A may assume a securing state 10 b including a first portion 12 b, a second portion 14 b, and a medial portion 13 b between the first portion and the second portion. In contrast to FIG. 1A, the first portion 12 b in FIG. 1B may assume a curved geometry. The first terminal end 18 b of the first portion 12 b may include a sharpened point that may help anchor the securing device in the securing state 10 b to the tissue. In some alternative embodiments, the first terminal end 18 b may include one or more barbs, one or more serrations, one or more hooks, or any combination thereof. Also in contrast to FIG. 1A, the second portion 14 b in FIG. 1B may assume a curved geometry. The securing device in the securing state 10 b may also include a tab standoff 17 b that is connected to a tab 11 b on one end and to the medial portion 13 b of the securing device on the other end. The tab 11 b may be displaced from the medial portion 13 b by a slot 15 b.

FIG. 1C depicts a manner in which an article may be secured to the surface of a tissue by the securing device depicted in FIGS. 1A and 1B. As illustrated in FIG. 1C, the article 2 may be held against the surface of a tissue 3 by means of the securing device in the securing state 10 b. The first portion 12 b of the device may assume a curved geometry within the tissue 3, thereby forming a tissue anchor for the device. The second portion 14 b of the device may contact at least a portion of a surface of the article 2, thereby securing the article against the surface of the tissue 3. The medial portion of the device may also be in contact with at least a portion of the surface of the article 2. In some non-limiting embodiments, the second portion 14 b may form a curved geometry around the surface of the article 2.

FIG. 2A depicts a side view of another embodiment of a securing device having a U-shaped deployment state. FIG. 2B depicts a side view of the same securing device as FIG. 2A in the securing state.

As depicted in FIG. 2A, the securing device in the deployment state 20 a may include a first portion 22 a, a second portion 24 a, and a medial portion 23 a between the first portion and the second portion. In contrast to the securing device depicted in FIG. 1A, the first portion 22 a and the second portion 24 a in the deployment state 20 a do not form a linearly extended structure, but may be effectively parallel to each other. If the medial portion 23 a is curved, the deployment state 20 a may form a U-shaped structure. The first portion 22 a may have a first terminal end 28 a having a sharpened point for penetrating the tissue. In some alternative embodiments, the first terminal end 28 a may include one or more barbs, one or more serrations, one or more hooks, or any combination thereof. The second portion 24 a may have a second terminal end 29 a which may have a sharpened point for penetrating the tissue. In some alternative embodiments, the second terminal end 29 a may include one or more barbs, one or more serrations, one or more hooks, or any combination thereof. The securing device in the deployment state 20 a may also include additional features 21 a connected to the medial portion 23 a of the securing device. The additional features 21 a may be used to secure the device in the deployment state 20 a within a system to secure an article to a surface of a tissue through the use of one or more securing devices. The additional features 21 a may include a thickened section of the medial portion 23 a, a broadened section of the medial portion, a flanged section of the medial portion, a perforated section of the medial portion, a hooked section of the medial portion (as depicted, for example, in FIG. 2E), or any combination thereof.

As depicted in FIG. 2B, the securing device in FIG. 2A may assume a securing state 20 b including a first portion 22 b, a second portion 24 b, and a medial portion 23 b between the first portion and the second portion. In contrast to FIG. 2A, the first portion 22 b in FIG. 2B may assume a curved geometry within the tissue. The first terminal end 28 b of the first portion 22 b may include a sharpened point that may help anchor the securing device in the securing state 20 b to the tissue. In some alternative embodiments, the first terminal end 28 b may include one or more barbs, one or more serrations, one or more hooks, or any combination thereof. Also in contrast to FIG. 2A, the second portion 24 b in FIG. 2B may assume a curved geometry while embedded in the tissue. The second terminal end 29 b of the second portion 24 b may include a sharpened point that may help anchor the securing device in the securing state 20 b to the tissue. In some alternative embodiments, the second terminal end 29 b may include one or more barbs, one or more serrations, one or more hooks, or any combination thereof. As depicted in FIG. 2B, the article 2 to be secured to the tissue may be contacted by a section of the first portion 22 b, a section of the medial portion 23 b, and a section of the second portion 24 b. The additional features 21 b may also be configured to assist with stabilizing the article 2 within the securing device in the securing state 20 b.

It may be appreciated that securing devices having parallel first and second portions in the deployment state may assume any of a number of different geometries in the securing state. For example, as depicted in FIG. 2B, the securing state may include the first and second portions or the first and second terminal ends forming a scissor-like geometry within the tissue, thereby holding the article between them. As depicted in FIG. 2C, the first and second portions or the first and second terminal ends may form a pair of opposing fish-hooks in the tissue and below the article. As depicted in FIG. 2D, the first and second portions or the first and second terminal ends may form a pair of opposing fish-hooks in the tissue that point away from the article. As depicted in FIG. 2E, the first and second portions or the first and second terminal ends may form a pair of opposing barbs in the tissue that point away from the article. As depicted in FIG. 2F, the first and second portions or the first and second terminal ends may form a clothes-pin-type arrangement within the tissue pointing towards the article. It may be understood that the specific geometric arrangements of the first portion, first terminal end, second portion, and second terminal end in the securing state as depicted in FIGS. 2B-2F are merely representative examples, and do not limit the possible configurations achievable by the securing device.

FIGS. 3A-3C depict one type of system configured to deploy a securing device and secure an article therewith to a surface of a tissue. The system may be used with a securing device having a linearly extended deployment state.

The system may include an exterior tube 31 that may house the remaining components. In one embodiment, the exterior tube 31 may include, at a distal end, a portion configured to form a mechanically stable contact between the article 2 and the surface of the tissue 3. In one non-limiting example, the portion of the exterior tube 31 may comprise a pawl 32. The pawl 32 may have a surface geometry complementary to the geometry of at least a portion of an external surface of the article 2. The exterior tube 31 may be composed of one or more of a metal and a plastic. In some embodiments, the exterior tube 31 may be composed of one or more of a stainless steel, a nickel titanium alloy, and a cobalt chrome alloy. In some embodiments, the exterior tube 31 may be composed of one or more of a polyether ether ketone, a polyether block amide, a polytetrafluoroethylene, a fluorinated ethylene propylene, and an extended polytetrafluoroethylene.

In general, there are no limitations to any one or more of the physical dimensions of the system, as the dimensions of the system may depend, at least in part, on the article to be secured, the tissue to which it may be secured, and the securing device. In some non-limiting embodiments, the exterior tube 31 may have a diameter of about 3 mm to about 8 mm. Examples of the diameter of the exterior tube 31 may include a diameter of about 3 mm, about 4 mm, about 5 mm, about 6 mm, about 7 mm, about 8 mm, and any value or range between any two of these values including endpoints. In one non-limiting example, the exterior tube 31 may have a diameter of about 5 mm.

The system may also include a medial tube 34 disposed at least partially within the exterior tube 31, an interior tube 36 at least partially disposed within the medial tube, and a push rod 38 at least partially disposed within the interior tube.

The medial tube 34 may be composed of one or more of a metal and a plastic. In some non-limiting examples, the medial tube 34 may be composed of one or more of a stainless steel, a nickel titanium alloy, and a cobalt chrome alloy. In some other non-limiting examples, the medial tube 34 may be composed of or more of a polyether ether ketone, a polyether block amide, a polytetrafluoroethylene, a fluorinated ethylene propylene, and an extended polytetrafluoroethylene.

The interior tube 36 may be composed of one or more of a metal and a plastic. In some non-limiting examples, the medial tube 36 may be composed of one or more of a stainless steel, a nickel titanium alloy, and a cobalt chrome alloy. In some other non-limiting examples, the medial tube 36 may be composed of or more of a polyether ether ketone, a polyether block amide, a polytetrafluoroethylene, a fluorinated ethylene propylene, and an extended polytetrafluoroethylene.

The push rod 38 may be composed of a metal. In some non-limiting examples, the push rod 38 may be composed of one or more of a stainless steel, a nickel titanium alloy, and a cobalt chrome alloy.

As depicted in FIG. 3A, the interior tube 36 may have an exterior surface, the medial tube 34 may have an interior surface, and the interior tube and the medial tube may be configured to releasibly engage the at least one securing device 10 in the first deployment state therebetween. The medial tube 34 may have a distal end configured to engage a slot between a tab and the body of the securing device 10. Additionally, the push rod 38 may have a distal end configured to engage an end of the tab of the securing device 10. In one non-limiting embodiment, the interior tube 36 may further have at least one detent configured to form a mechanical contact with at least one friction protrusion of the at least one securing device 10.

The securing device and system depicted in FIGS. 3A-3C may operate in the following manner. As illustrated in FIG. 3A, a securing device 10 having a linearly extended deployment state may be engaged by the system in a space between the medial tube 34 and the interior tube 36. A distal end of the interior tube 36 may engage a slot of the securing device 10 and the exterior end of the push rod 38 may engage a tip end of the tab of the securing device. The article 2 may be stabilized against the surface of the tissue 3 by the pawl 32. As illustrated in FIG. 3B, the push rod 38 and interior tube 36 may be moved in a distal direction. Because of the engagement of the slot with the interior tube 36 and the tab with the push rod 38, the securing device 10 may be displaced in the distal direction, thereby forcing the first portion of the securing device to penetrate the tissue 3 and releasing the securing device 10 from the system. The first portion of the securing device 10 may continue penetrating the tissue 3 until the tab standoff 37 contacts the surface of the tissue. The first portion of the securing device 10, free of the system, may then assume a curved geometry within the tissue 3, constituting a portion of the securing state of the device. As illustrated in FIG. 3C, once the first portion of the securing device 10 has assumed a curved geometry within the tissue 3, thereby anchoring at least a portion of the securing device, the medial tube 34 and the interior tube 36 may be moved in the proximal direction. In this manner, the second portion of the securing device 10 may be freed from the system and allowed to assume the curved geometry of the securing state. In some embodiments, the securing state may include the second portion of the securing device 10 forming a curved contact with at least a portion of the surface of the article 2.

An alternative embodiment of a system for securing an article to a tissue is depicted in FIGS. 4A-4D. In the system depicted in FIGS. 4A-4D, the securing device may be one having a U-shaped deployment state. In FIG. 4A, the one or more securing devices 10 may initially be engaged within the delivery system 44. The delivery system 44 may include a distal end having a surface geometry complementary to the geometry of at least a portion of an external surface of the article to be secured. As depicted in FIG. 4B, the delivery system 44 may be brought in proximal contact to the article 2 to be secured. The article 2 may be contacted with the distal end of the system 44 at the distal end having the complementary geometry to the article, as depicted in FIG. 4C. FIG. 4D illustrates that a securing device 10 may be released from the system 44 to contact the article 2. The securing device 10 may be released from the system 44 according to any of a number of means including the use of a push rod (not shown).

FIGS. 5A-5D depict the interaction of a securing device 10 with an article 2 and a tissue 3 to which the article may be secured. As illustrated in FIGS. 5A-5D, the securing device 10 may be one having a U-shaped deployment state. FIG. 5A illustrates the article 2 proximate to the surface of the tissue 3. The securing device 10 may be in a deployment state, as indicated by the U-shape of the securing device. In the deployment state, such a securing device 10 may have a first portion 22 a, and a second portion 24 a in a roughly parallel orientation. A medial portion 23 a is disposed between the first portion 22 a and the second portion 24 a. Together, the first portion 22 a, the second portion 24 a, and the medial portion 23 a may surround the article 2. As depicted in FIG. 5B, the first terminal end from the first portion 22 a, and the second terminal end of the second portion 24 a may contact the surface of the tissue 3. As illustrated in FIG. 5B, the securing device 10 may still be in the deployment state, as indicated by the index letter ‘a’ associated with each of the figure component labels. The securing device 10, as illustrated in FIG. 5C, may be advanced in a distal direction, causing the first section 22 c and the second section 24 c to begin their respective transitions from the deployment state to the securing state (as indicated by the letter ‘c’ in the component labels.) The medial portion 23 c may also transition between a deployment state to a securing state. In FIG. 5D, the securing device 10 has transitioned to the securing state, as indicated by the index letter ‘b’ associated with each of the figure component labels. In the securing state, the first portion 22 b and second portion 24 b may assume their respective curved geometries within the tissue 3. The article 2 may thus be anchored to the surface of the tissue 3 by means of the first portion 22 b, second portion 24 b, and medial portion 23 b of the securing device 10.

FIG. 6 is a flow chart of a method for securing an article to a tissue. The method may include providing 610 a system for securing the article to the tissue. In some embodiments, the system may include a housing having a distal end, in which at least a portion of the distal end of the housing may be configured to engage the article with a surface of the tissue. In some non-limiting examples, the system for securing the article to the tissue may further include a medial tube at least partially disposed within the system housing, an interior tube at least partially disposed within the medial tube, and a push rod at least partially disposed within the interior tube.

The method may also include providing 620 at least one securing device. In some embodiments, the at least one securing device may include a body, transitionable from a first deployment state to a second securing state, having a first portion, a second portion, and a medial portion between the first portion and the second portion. The first portion of the securing device may further have a first terminal end configured to pierce the tissue. Additionally, the second securing state of the securing device may include at least a section of the first portion of the body assuming a curved geometry embedded in the tissue and at least a section of the medial portion of the body contacting a surface of the article.

In one non-limiting example, the first deployment state of the securing device may take the form of a U-shaped state, and the second securing state may include at least a section of a first terminal end of the first portion assuming a curved geometry embedded in the tissue, at least a section of a second terminal end of the second portion assuming a curved geometry embedded in the tissue, and at least a section of the medial portion contacting a surface of the article

In another non-limiting example, the first deployment state of the securing device may take the form of a linearly extended state, and the second securing state may further include at least a section of the first portion of the body assuming a curved geometry embedded in the tissue and at least a section of the second portion contacting a surface of the article. In some additional non-limiting examples, the securing device may further include a tab standoff in mechanical communication with the medial portion of the body at a first standoff end and a tab at a second standoff end, in which the tab may be displaced by a slot from the body.

The securing device, while in a deployment state, may be releasibly engaged 630 with the deployment system. In some embodiments, the at least one securing device may include a tab standoff in mechanical communication with the medial portion of the body of the securing device at a first standoff end and a tab at a second standoff end, thereby displacing the tab from the body by a slot. For such a securing device, releasibly engaging 630 the device within the system for securing the article may further include releasibly engaging the slot of the device with a portion of the deployment system. In one example, such a deployment system may include an interior tube having a distal end that may engage 630 the slot of the securing device.

In some embodiments, the at least one securing device may also include a friction protrusion in mechanical communication with the body and proximate to a tab. For such a securing device, releasibly engaging the device within the system for securing the article may further include releasibly engaging the friction protrusion with a detent on an exterior surface of an interior tube of the deployment system.

The deployment system may be used to engage 640 the article with the surface of the tissue. In some embodiments, the article may be engaged 640 with the surface of the tissue using at least a portion of a distal end of the housing.

The securing device may be released 650 from the deployment system, thereby allowing the body of the securing device to assume the second securing state and securing the article against the surface of the tissue. In some non-limiting embodiments, releasing 650 the securing device from the distal end of the housing may include contacting the tab of the securing device with a distal end of a deployment system push rod, extending the push rod in a distal direction, and extending a medial tube of the deployment system in a proximal direction.

In the above detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the Figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are explicitly contemplated herein.

The present disclosure is not to be limited in terms of the particular embodiments described in this application, which are intended as illustrations of various aspects. Many modifications and variations can be made without departing from its spirit and scope, as will be apparent to those skilled in the art. Functionally equivalent methods and apparatuses within the scope of the disclosure, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing descriptions. Such modifications and variations are intended to fall within the scope of the appended claims. The present disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds, compositions or biological systems, which can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.

It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (for example, bodies of the appended claims) are generally intended as “open” terms (for example, the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” et cetera). While various compositions, methods, and devices are described in terms of “comprising” various components or steps (interpreted as meaning “including, but not limited to”), the compositions, methods, and devices can also “consist essentially of” or “consist of” the various components and steps, and such terminology should be interpreted as defining essentially closed-member groups. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to embodiments containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (for example, “a” and/or “an” should be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number (for example, the bare recitation of “two recitations,” without other modifiers, means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, et cetera” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (for example, “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, et cetera). In those instances where a convention analogous to “at least one of A, B, or C, et cetera” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (for example, “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, et cetera). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”

In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.

As will be understood by one skilled in the art, for any and all purposes, such as in terms of providing a written description, all ranges disclosed herein also encompass any and all possible subranges and combinations of subranges thereof. Any listed range can be easily recognized as sufficiently describing and enabling the same range being broken down into at least equal halves, thirds, quarters, fifths, tenths, et cetera As a non-limiting example, each range discussed herein can be readily broken down into a lower third, middle third and upper third, et cetera As will also be understood by one skilled in the art all language such as “up to,” “at least,” and the like include the number recited and refer to ranges which can be subsequently broken down into subranges as discussed above. Finally, as will be understood by one skilled in the art, a range includes each individual member. Thus, for example, a group having 1-3 cells refers to groups having 1, 2, or 3 cells. Similarly, a group having 1-5 cells refers to groups having 1, 2, 3, 4, or 5 cells, and so forth.

Various of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art, each of which is also intended to be encompassed by the disclosed embodiments. 

What is claimed is:
 1. A system for securing an article to a tissue by releasably engaging at least one securing device, the system comprising: an exterior tube comprising an interior tube and a distal end, wherein a substantial portion of the distal end is configured to contact the tissue; a push rod at least partially disposed within the interior tube; and at least one securing device comprising a tab standoff that is disposed between a first end configured to pierce the tissue and a second end, wherein the first end and the second end are each transitionable from a first deployment state to a second securing state, wherein a body of the at least one securing device comprises a first portion, a second portion, and a medial portion between the first portion and the second portion, wherein the tab standoff is in mechanical communication with the medial portion of the body at a first end of the tab standoff and a tab at a second end of the tab standoff, wherein the tab is displaced by a slot from the body, and wherein the push rod is configured to: engage the tab standoff, and cause the first end of the at least one securing device to pierce the tissue and transition from the first deployment state to the second securing state, wherein the interior tube is movable relative to the exterior tube, and wherein the interior tube is configured to release the second end of the at least one securing device when withdrawn into the exterior tube, thereby causing the second end of the at least one securing device to transition from the first deployment state to the second securing state.
 2. The system of claim 1, wherein the exterior tube comprises one or more of a metal and a plastic.
 3. The system of claim 1, wherein the push rod comprises a metal.
 4. The system of claim 1, wherein the exterior tube has a diameter of 3 mm to 8 mm.
 5. The system of claim 1, wherein the exterior tube comprises a pawl having a surface geometry complementary to a geometry of at least a portion of an external surface of the article.
 6. The system of claim 5, wherein the pawl is configured to form a stable mechanical contact between the article and the tissue by contacting at least a portion of the external surface of the article.
 7. The system of claim 1, further comprising: a medial tube disposed at least partially within the exterior tube; wherein the interior tube is at least partially disposed within the medial tube. 